The ______ is an unbiased estimator of the population mean.

Let X and Y be two independent Poisson variates with rate 5 and 10, respectively, then the E(XY = 2) is equal to:

On fitting of a trend line Y = a + bt on a time series (with year as a unit of time), the monthly increment/decrement is given by:

If M: Mean, Md: Median, Mo: Mode, Q₁: First Quartile and Q₃: Third Quartile, then which of the following is an absolute measure of skewness?

For a two-way classification with p treatments, q blocks and r observations per cell, the degrees of freedom for error and total, respectively, are:

Let X and Y be two independent Poisson variates with rate 5 and 10, respectively, then the distribution of Z = X + Y is:

Which of the following is NOT true about ungrouped frequency distribution?

The relative frequency of a class is:

Let \( X \) follow Poisson distribution with mean \( \lambda \). If \[P(X = 2) = \frac{1}{2} P(X = 3),\] then the value of \( \lambda \) is:

The ______ is an unbiased estimator of the population mean.

Let X and Y be two independent Poisson variates with rate 5 and 10, respectively, then the E(XY = 2) is equal to:

On fitting of a trend line Y = a + bt on a time series (with year as a unit of time), the monthly increment/decrement is given by:

If M: Mean, Md: Median, Mo: Mode, Q₁: First Quartile and Q₃: Third Quartile, then which of the following is an absolute measure of skewness?